Exploit Pack is an open source project security that will help you adapt exploit codes on-the-fly.

Most users think Exploit Pack is a great Metasploit alternative.
Exploit Pack is the most popular Windows, Mac & Linux alternative to Metasploit.
Exploit Pack is the most popular commercial alternative to Metasploit.
- Exploit Pack is Paid and Proprietary














































Nessus scans for vulnerabilities, Metasploit exploits upon the vulnerabilities. I guess the prices are similar though...